Dana - I too have trouble remembering things. What I frequently do is to create little Notepad files of particularly useful tips, and I save those in a Desktop folder called Sonar Tips.
That way, instead of having to remember where in the world I had learned something from, I can just go to that folder and search, and there are LOTS less things to wade through, making it a lot easier to find things again. This way, it doesn't matter which book or video a tip came from, all the ones I think I will want to use in the future are saved here, and it is pretty easy to find them again.
Bob Bone